I am a sceptic, but maybe more hope here

[Low-Q]

Here is 4 videos taken in four different angles, in four different directions. To answer the question about what forces I feel: I feel a force pushing the magnet away. When I hold both magnets in my hand, I can only verify that there is only pushing force, with a small attraction force, sticky point, right after the hand held magnet has leaved the pushed magnet. This sticky point is however much weaker than the pushing forces - as the video confirms, by actually pushing the magnet far away.

http://www.lyd-interior.no/images/videos/left2right.avi

http://www.lyd-interior.no/images/videos/right2left.avi

http://www.lyd-interior.no/images/videos/away-from-me.avi

http://www.lyd-interior.no/images/videos/towards-me.avi

This picture shows that two ecual poles attract each other in this position, but only when they come close enough:
http://www.lyd-interior.no/images/videos/PA240082.JPG

Vidar

[gyulasun]

Hi Vidar,

Thank you for the videos, very kind of you,  I was mainly interested in how big the repel back force on the upper magnet  (you hold in hand)  is from the bottom magnet  when kicking out.

You mentioned you using 70mm x 5mm x 5mm Neo magnets that are polarised across the 5mm thickness, right?  (Though the magnets you show in the picture/videos seem of rectangular cross sections (not a 5 x 5 square cross section but say 5 x 3) but I do not think this difference is important .)

I noticed in the videos that the bottom magnet's end which faces the upper magnet gets elevated in the air just after the kick out effect starts. This is due to attraction of the end of the bottom magnet to the middle part of the upper magnet during the kick out, right?

Regards
Gyula

[Low-Q]

Hi Vidar,

Thank you for the videos, very kind of you,  I was mainly interested in how big the repel back force on the upper magnet  (you hold in hand)  is from the bottom magnet  when kicking out.

You mentioned you using 70mm x 5mm x 5mm Neo magnets that are polarised across the 5mm thickness, right?  (Though the magnets you show in the picture/videos seem of rectangular cross sections (not a 5 x 5 square cross section but say 5 x 3) but I do not think this difference is important .)

I noticed in the videos that the bottom magnet's end which faces the upper magnet gets elevated in the air just after the kick out effect starts. This is due to attraction of the end of the bottom magnet to the middle part of the upper magnet during the kick out, right?

Regards
Gyula

Yes, its right. I have many 2,5 x 5 x 70mm magnets - among many other 5 x 5 x 70, but the 2,5 x 5 x 70mm ones are easier to control.
When the magnets are facing equal polarity, the kick-off will eventually lift up the bottom magnet. The reason is that these magnets would stick together placed side by side. Did you by the way got the ansver to you question regarding the repel back force in my hand? Or do you need a more precise explanation?

Here is a picture of some of my assortments. All neos taken from broken ribbon tweeters I have had.


Vidar

[gyulasun]

Did you by the way got the ansver to you question regarding the repel back force in my hand? Or do you need a more precise explanation?

Hi Vidar,

Yes, I think you answered it,  you felt the force pushing the bottom magnet away;  it is obvious this pushing force you felt is more or less equal to the force with which the bottom magnet kicks out.
Nice collection of block magnets!

rgds, Gyula